PV Inverter SMA America, LLC
146 SI5048U-TUS121440 Technical Description
17.2 Setting the off-grid parameters (Sunny Boy)
Controlled battery charging is needed in an off-grid configuration. Sunny Boy inverters can reduce
their feed-in power for this reason. This task is performed by a ”Power adjustment via frequency”
system (see section 17.5”Frequency Shift Power Control (FSPC)” (page147)).
To activate this feature, you must first pre-configure the Sunny Boy via programming.
17.3 Configuration
In order to adjust the parameters of the Sunny Boy, you need a connection to a communication
device. Install one of these three variants:
•Sunny WebBox
• Sunny Boy Control
• PC/laptop with Sunny Data Control software and a service cable for data transmission
(SMA order number: "USBPBS‑11" ‑ USB service interface)
17.4 Sunny Boy Parameter Settings
Grid‑tied
*Even with the setting "BackupMode" to "OnAll", the system fulfills the regulations according to
UL 1741.
NOTICE
Risk of death from back‑feed into the power distribution grid in the event of grid failure.
Once you set the Sunny Boy to stand‑alone grid parameters, the device no longer complies
with IEEE 929 and the IEEE 1547.
• Observe the locally applicable regulations.
• Consult the electric utility company.
Inverter Parameters Setting
Sunny Boy 3000‑US Default
BackupMode
UL1741
OnAll*
Sunny Boy 3800‑US
Sunny Boy 4000‑US
Sunny Boy 5000‑US
Sunny Boy 6000‑US
Sunny Boy 7000‑US
Sunny Boy 8000‑US
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